Er-Fe, Er-x polyhedra, Ferromagnetic, Lanthanoid

• B-Er-Fe
• B-Er-Fe-Mn
• Er-Fe-O
• Er-Fe-N
• magnetic properties
• magnetization
• magnetic transitions
• structural properties
• thermal and thermodynamic properties
• transitional
• rare earth
• ferromagnetic
• lanthanoid
• metal
• tetragonal
• hexagonal
• cubic
• orthorhombic
• trigonal